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[求助]C++如何取数组个数并提取每个数组值?
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发表于: 2008-3-16 09:51
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版版~还能请教一下吗? 谢谢小虾版版的热心帮助~
 #include <stdio.h> int i=0,array[6]; void main() { for (i;i<6;i++) { array[i]=i; } printf("数组个数:%d\n",sizeof(array)); } 怎么求不出来这样子的效果???  |
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动态数组和静态数组是不一样的 LZ不要搞混了。
要使用动态Array 你可以考虑用MFC 的CArray类 当然 C++ STL的东西也可以的。  看来地球上还有比我稍微菜一点的人。
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这样子应该可以了吧~~~嘿嘿.... 就是不知道怎么在外面取成员出来~
 [QUOTE=]#include <stdio.h> int i=0,a=0,*array; void main() { for (i;i<6;i++) { ++a; array=new int[i+1]; array[i]=i; printf("当前数组%d值为:%d\n",i,array[i]); } printf("数组个数:%d\n",a/*sizeof(array)/sizeof(int)*/); delete array; }[/QUOTE] |
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练习题~~~~ 虽然没有错误.但为什么有那么多的警告哦...
[QUOTE=]#include <stdlib.h> #include <windows.h> #include <vector> #include <stdafx.h> #include <string.h> //using spacename std; std::vector<std::string> H_array; BOOL CALLBACK EnumChildProc( HWND hwnd, // handle to child window LPARAM lParam // application-defined value ) { std::string str; char buffer[1024]; if(hwnd>0) { GetWindowText(hwnd,buffer,255); str=(std::string)buffer; H_array.push_back(str); return TRUE; }else { return FALSE; } } int main(int argc,char argv[]) { printf("正在枚举窗口列表...\n"); EnumChildWindows(0,(WNDENUMPROC)EnumChildProc,NULL); for (unsigned int i=0;i<H_array.size();i++) { printf("%d: %s\n",i,H_array[i].c_str()); } return 0; } [/QUOTE] --------------------Configuration: EnumChildWindows - Win32 Debug-------------------- Compiling... EnumChildWindows.cpp c:\program files\microsoft visual studio\vc98\include\vector(39) : warning C4786: 'std::reverse_iterator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const *,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::basic_string<char,std::char_traits<char>,std::allocator<char> > const &,std::basic_string<char,std::char_traits<char>,std::allocator<char> > const *,int>' : identifier was truncated to '255' characters in the debug information c:\program files\microsoft visual studio\vc98\include\vector(39) : while compiling class-template member function '__thiscall std::vector<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<c har,std::char_traits<char>,std::allocator<char> > > >::std::vector<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >(const std::allocator<std: :basic_string<char,std::char_traits<char>,std::allocator<char> > > &)' c:\program files\microsoft visual studio\vc98\include\vector(39) : warning C4786: 'std::reverse_iterator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > *,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std: :basic_string<char,std::char_traits<char>,std::allocator<char> > &,std::basic_string<char,std::char_traits<char>,std::allocator<char> > *,int>' : identifier was truncated to '255' characters in the debug information c:\program files\microsoft visual studio\vc98\include\vector(39) : while compiling class-template member function '__thiscall std::vector<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<c har,std::char_traits<char>,std::allocator<char> > > >::std::vector<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >(const std::allocator<std: :basic_string<char,std::char_traits<char>,std::allocator<char> > > &)' c:\program files\microsoft visual studio\vc98\include\vector(39) : warning C4786: 'std::vector<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >::vector<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >' : identifier was truncated to '255' characters in the debug information c:\program files\microsoft visual studio\vc98\include\vector(60) : warning C4786: 'std::vector<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >::~vector<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >' : identifier was truncated to '255' characters in the debug information Linking... EnumChildWindows.exe - 0 error(s), 4 warning(s) |
